Some 1-benzyl-2-cyanimino- and 1-benzyl-2-nitroimino-1,2-dihydropyridi
nes were synthesized as new potential antiulcer agents. Some of these
compounds exhibited significant antisecretory activity in the Shay tes
t, like 1-(2-chlorobenzyl)-2-cyanimino-1,2-dihydropyridine (3c, ED50 =
1.8 mg/kg po), and some also had a cytoprotective effect, like 1-benz
yl-2-cyanimino-1,2-dihydropyridine (3a, ED50 = 10.0 mg/kg po), in a mo
dified Robert test, depending on the substitution of the benzyl group.